[Java] Embed Rust CLI runtime 4.9: CI workflow updates

[edburns]

Overview

Modify .github/workflows/java-sdk-tests.yml to add a new java-sdk-inprocess CI job that runs the full Java E2E test suite under the InProcess FFI transport on Ubuntu linux-x64.

This is task 4.9 of 9 in the implementation plan. Tasks are assigned, completed, and merged serially in this listed order. Tasks 4.1–4.8 are complete on the base branch before this task begins.

Branch: edburns/1917-java-embed-rust-cli-runtime-dd-3039145 on upstream

Plan and supporting resources

On the edburns/1917-java-embed-rust-cli-runtime-dd-3039145 branch, the directory 1917-java-embed-rust-cli-runtime-remove-before-merge contains the plan (1917-embed-cli-runtime-ignorance-reduction-plan.md) and supporting resources (spikes, prototypes, diagrams).

Read the entire plan before working.

Relevant plan sections to carefully re-read

• Section 3.11 — E2E testing with InProcess transport — Resolution: Run full E2E suite under both transports:
  • CI job A (existing): subprocess transport — existing java-sdk-tests.yml job, NO changes.
  • CI job B (new): InProcess transport — same test suite, new Maven profile (-Pinprocess) with COPILOT_SDK_DEFAULT_CONNECTION=inprocess, forkCount=1, parallel=none.
    CI job B requires runtime.node on classpath (from copilot-native module). The matrix runs both jobs for confidence that both transports produce identical behavior.
• Section 3.12 — CI/CD workflow changes — Resolution:
  • Modify existing java-sdk-tests.yml — add a new java-sdk-inprocess job (separate job, NOT a matrix entry, matching .NET pattern).
  • Existing java-sdk job is completely unchanged.
  • InProcess CI job scope: ubuntu-latest (linux-x64) only.
  • Native binaries provisioned via copilot-native module's generate-resources phase (npm pack).
  • No explicit availability check — the -Pinprocess profile is the gating mechanism.
• Section 4.9 — CI workflow updates (the primary task description).
• Hard scope invariant: No CI work for platforms other than linux-x64 in this phase.

Resolved decisions that constrain this task

• Job name: java-sdk-inprocess (a separate job, not a matrix entry).
• Runner: ubuntu-latest only.
• Profile: -Pinprocess Maven profile (created in task 4.8).
• Prerequisites: The copilot-native module must be built first (it downloads runtime.node for linux-x64 via npm pack). The InProcess CI job must either:
  • Build the full reactor (mvn clean verify -Pinprocess from java/), which includes copilot-native, OR
  • Have a prerequisite step that builds copilot-native to produce the classifier JAR before running tests.
• Existing job unchanged: The existing java-sdk job must not be modified.
• Node.js required: The InProcess CI job needs Node.js (for npm pack in the copilot-native module AND for the replay proxy in E2E tests).

Deliverables

Files to modify

1. .github/workflows/java-sdk-tests.yml — Add the java-sdk-inprocess job:
   • Runs on ubuntu-latest
   • Sets up JDK (same version as existing job)
   • Sets up Node.js (same version as existing job, needed for npm pack and replay proxy)
   • Runs mvn clean verify -Pinprocess from the java/ directory (full reactor build including copilot-native)
   • Ensure env var COPILOT_SDK_DEFAULT_CONNECTION=inprocess is set (handled by profile, but verify)
   • Same caching, artifact upload, and failure reporting patterns as the existing job

Gating tests and criteria

1. InProcess CI job defined: The workflow YAML contains a java-sdk-inprocess job that runs on ubuntu-latest.
2. Profile activation: The job invokes Maven with -Pinprocess.
3. Node.js available: The job sets up Node.js for npm pack and replay proxy.
4. Existing job unchanged: The existing java-sdk (subprocess) job is identical to before.
5. YAML validity: The workflow YAML is syntactically valid.
6. All prior tests pass: mvn verify from java/ passes locally.
7. Spotless compliance: mvn spotless:check passes.

Out of scope

• Adding InProcess CI jobs for macOS, Windows, ARM, or any platform other than linux-x64.
• Publishing workflows or Maven Central deployment changes.
• Changes to any Java source code — this task is CI workflow only.